KR20230000590A - Filter press apparatus using simultaneous up-down compression - Google Patents

Abstract

The present invention relates to a filter press apparatus, comprising: a pressing unit including a plurality of filter plates located between upper and lower plates and filter cloth continuously arranged in a zigzag manner in a space between the filter plates; a hydraulic unit which provides hydraulic pressure to the pressing unit; a supply unit which supplies sludge; and a control unit which controls an operation of each unit. The pressing unit includes: support pillars located while being spaced apart from each other by a predetermined distance in front, rear, left, and right directions, wherein lower ends of the respective support pillars are fixed to the ground, and upper portions of the respective support pillars extend upward in a vertical direction; a support plate formed in a plate-shaped structure and installed on upper ends of the support pillars; upper and lower plates spaced apart from each other by a predetermined distance in a vertical upward and downward direction and located below the support plate; a pair of first left and right hydraulic cylinders located between the support pillars and operating in a vertical upward direction since lower ends of the respective first hydraulic cylinders are fixed to the ground and respective piston upper ends are fixedly coupled to the lower plate and a pair of second left and right hydraulic cylinders aligned with the respective first hydraulic cylinders, installed on an upper surface of the support plate, and operating in a vertical downward direction since respective piston lower ends are fixedly coupled to the upper plate; and a plurality of upper guide pipes each including an upper end fixed to each edge portion at a lower surface of the upper plate and a lower end extending in a vertical downward direction and a plurality of lower guide plates each including a lower end fixed to each edge portion at an upper surface of the lower plate and an upper end penetrating and inserted into each upper guide pipe. According to the present invention, the filter press apparatus can be easily installed even in a narrow space.

Description

Up and down compression type filter press apparatus {Filter press apparatus using simultaneous up-down compression}

The present invention relates to a filter press device, and more specifically, to allow vertical downward force and vertical upward force to operate at the same time, so that it can be installed even in a narrow space and stably operated for a long time, and any one of the installed hydraulic cylinders It relates to an up-and-down compression type filter press device capable of normally ending work in progress even if it operates abnormally.

The filter press device is stacked in multiple stages, interposing filter cloths between filter plates in a zigzag manner, supplying and filling the space between the filter plates and filter cloths with slurry, and then compressing the filled slurry by pressurizing compressed air to significantly reduce the moisture content of the slurry. It is a device that reduces and recovers the solid components in the slurry by separating them in the form of a cake. Such a filter press device is widely used in industrial wastewater containing dyes or pigments, as well as in semiconductor manufacturing or raw material treatment processes for secondary batteries.

Conventionally proposed filter press devices are roughly divided into a horizontal operation method disclosed in FIG. 4 and a vertical operation method disclosed in FIGS. 5 and 6 respectively. The former overlaps the filter plates vertically on the ground and presses them horizontally from the left and right to compress the slurry. There is a restriction to

In contrast, the latter has less spatial restrictions due to the installation of the device than the former in that the slurry is compressed by pressing from the top to the bottom or from the bottom to the top in a state where the filter plate is overlapped horizontally with the ground, but FIGS. 5 and 6 When the filter plates are stacked in multiple stages for mass production of cakes, a spatial restriction different from the former is followed in that the height of the pressurization unit itself becomes too high.

In addition, in order to compress the slurry from the top to the bottom as shown in FIG. 5, the hydraulic cylinder must be installed on the upper support plate. In this case, the capacity of the hydraulic cylinder that can be installed is limited due to the weight of the hydraulic cylinder. In contrast, when the hydraulic cylinder is installed on the ground and the slurry is compressed from the bottom to the top as shown in FIG. 6, the installation capacity of the hydraulic cylinder is not limited, but the top plate itself must resist the pressing force by the hydraulic cylinder. There was a problem that the operation of the device depended on the fixed state of the device.

Republic of Korea Patent No. 2193514 Republic of Korea Patent No. 1332031 Chinese Patent Publication No. 11701291

The present invention has been proposed to improve the problems of the prior art, and an object of the present invention is not only to be able to install in a narrow space, but also to perform an appropriate dewatering process without using a large-capacity hydraulic cylinder, and to operate stably for a long time. It is to provide a filter press device that can secure.

In order to achieve this object, the present invention provides a plurality of filter plates positioned between upper and lower plates and a pressurizing unit provided with filter cloths disposed in a zigzag manner in a continuous space between the filter plates, a washing unit for washing the filter cloths, and hydraulic pressure applied to the pressurization unit. A filter press device including a hydraulic unit for providing, a supply unit for supplying the slurry, and a control unit for controlling the operation of each unit, wherein the pressurization unit is located at a certain distance from each other in the front, rear, left and right directions, and each lower end is Support pillars fixed to the ground and each upper portion extending vertically upward; A support plate made of a plate-like structure and installed on the upper end of the support column; Upper and lower plates located at a lower part of the support plate at a certain distance vertically upward and downward; It consists of a left and right pair and is located between the support pillars, each lower part is fixed to the ground, and each piston upper part is fixed to the lower plate, and the first hydraulic cylinder acting vertically upward, the left and right aligned with each of the first hydraulic cylinders Second hydraulic cylinders made of a pair and installed on the upper surface of the support plate, but the lower part of each piston is fixedly coupled to the upper plate and acts vertically downward; Each upper part is fixed to each corner of the lower surface of the upper plate, each lower part is a plurality of upper guide tubes extending vertically downward, each lower part is fixed to the corner of the upper surface of the lower plate and each upper part is opposite Its technical features include a plurality of lower guide tubes inserted through each of the upper guide tubes.

The total capacity of the second hydraulic cylinder may be in the range of 10 to 15% of the total capacity of the first hydraulic cylinder.

At this time, a third hydraulic cylinder is installed between the pair of left and right second hydraulic cylinders aligned with each of the first hydraulic cylinders, and the lower end of the piston of the third hydraulic cylinder may be fixedly coupled to the center of the upper plate.

The present invention proposes a vertical operation type filter press device in which a vertical downward force and a vertical upward force simultaneously act by installing separate hydraulic cylinders on the upper and lower sides, so that it can be installed very easily even in a narrow space.

In addition, the present invention has the advantage of ensuring the structural stability of the device itself by differentiating the external forces of the hydraulic cylinders operating in opposite directions, minimizing vibrations generated during operation, and enabling stable work for a long time.

In addition, by providing a separate hydraulic cylinder on the center of the top plate, the present invention can safely finish the work in progress even if any one of the hydraulic cylinders that act vertically downward is abnormally operated or inoperable. It is possible to prevent the device from being damaged by force.

1 is a schematic overall configuration diagram of a filter press apparatus according to the present invention.
Figure 2 is a schematic configuration diagram of AA line in Figure 1;
Figures 3a and 3b are schematic operation configuration of the pressurization unit in the filter press device according to the present invention, respectively.
Figure 4 is a schematic configuration diagram of a conventional filter press device.
5 is a schematic diagram of another configuration of a conventional filter press device;
6 is another schematic configuration diagram of a conventional filter press device;

Looking at the preferred embodiment according to the present invention in detail with reference to the accompanying drawings, as follows, in detailing the embodiment of the present invention, there is no direct relationship with the technical features of the present invention, or A detailed description will be omitted for matters that are obvious to those skilled in the art.

The technical feature of the present invention is that it proposes a filter press device comprising a pressurizing unit, a washing unit, a hydraulic unit, a supply unit, and a control unit equipped with a filter plate and a filter cloth. Each of these configurations will be described in detail below.

The pressurization unit is a part that pressurizes the supplied slurry, and as shown in FIG. 1, the support pillar 11, the support plate 12, the upper plate 13 and the lower plate 14, the upper guide pipe 15 and the lower guide pipe (16), filter plate 17, filter cloth 18, first hydraulic cylinders 21 and 22, and second hydraulic cylinders 25 and 26.

The support pillar 11 is a means for supporting the pressurization unit as a whole, and is located at a predetermined distance apart from each other in the front, rear, left and right directions, each lower part is fixed to the ground, and each upper part extends vertically upward. At this time, the support pillar 11 may be composed of a base part made of a reinforced-concrete structure and a support frame part provided on the upper side of the base part, as shown in the drawing.

The support plate 12 is a means for supporting the second hydraulic cylinders 21 and 22, and is installed on the upper end of the support column 11. The support plate 12 is preferably made of a plate-like structure, and may be made of a steel plate having a certain thickness or a steel box structure in which a steel plate is welded.

Each of the upper plate 13 and the lower plate 14 is a means for pressing a plurality of filter plates 17 and filter cloths 18 by an applied external force, and is located at the lower part of the support plate 12 at a certain distance vertically and downward. do. Each of the upper and lower plates 13 and 15 may have a steel plate structure provided with a reinforcement part.

The first hydraulic cylinders 25 and 26 are means for pressing the lower plate 14 vertically upward, and are installed between the support pillars 11 as a pair of left and right. At this time, the lower portions of each of the first hydraulic cylinders 25 and 26 are fixed to the ground, and the upper portions of the first pistons 27 and 28 of each of the first hydraulic cylinders 25 and 26 are fixedly coupled to the lower plate 14 do.

The second hydraulic cylinders 21 and 22 are means for pressing the top plate 13 vertically downward, and are installed on the upper surface of the support plate 12, consisting of a pair of left and right aligned with the first hydraulic cylinders 25 and 26, respectively. . At this time, the lower ends of the second pistons 23 and 24 of the second hydraulic cylinders 21 and 22 are fixedly coupled to the upper plate 13.

As such, the present invention proposes a pressurization unit of a vertical operation method, but by installing hydraulic cylinders on each of the upper and lower sides so that the vertical downward force and the vertical upward force operate simultaneously, the horizontal space constraints due to the installation of the device Of course, it is also possible to completely solve the vertical space constraints.

At this time, the present invention proposes a case in which the total capacity of the second hydraulic cylinders 21 and 22 is within the range of 10 to 15% of the total capacity of the first hydraulic cylinders 25 and 26. That is, as shown in the drawing, the first hydraulic cylinder acting vertically upward is configured as a main hydraulic cylinder, and the second hydraulic cylinder acting vertically downward is configured as an auxiliary hydraulic cylinder, and the action of the second hydraulic cylinder is configured as a first hydraulic cylinder. It is to keep it within 1/10 range compared to the action of the cylinder.

This secures the structural stability of the support plate by the weight of the first hydraulic cylinder, minimizes the vibration generated during the operation of the first hydraulic cylinder, and counteracts the main external force caused by the second hydraulic cylinder. By transmitting the applied external force to the upper plate, the upper plate can maintain a stable state for a long time during the pressing process.

In addition, at this time, the present invention does not exclude the case where the third hydraulic cylinder 31 is further provided between the second hydraulic cylinders 21 and 22 . As shown in the drawing, the third hydraulic cylinder 31 is installed between the second hydraulic cylinders 21 and 22 aligned with the first hydraulic cylinders 25 and 26, respectively, and the third piston of the third hydraulic cylinder 31 (32) The lower part is fixedly coupled to the center of the upper plate (13).

The reason why the present invention proposes a configuration in which the third hydraulic cylinder 31 to which a vertical downward external force acts similarly to the second hydraulic cylinders 21 and 22 is installed in the center of the top plate 13 is, This is to supplement the action of the cylinders 21 and 22 and at the same time prepare for an emergency situation in which the device may be damaged.

As described above, in the present invention, the first hydraulic cylinder is the main actuator, and the second hydraulic cylinder is a subordinate actuator that assists the operation of the first hydraulic cylinder. Therefore, if any one of the second hydraulic cylinders operates abnormally or becomes inoperable while the first hydraulic cylinder is operating, the pressurization process may not be performed normally, or in the worst case, serious damage may occur such that the device itself is damaged. .

To this end, the present invention provides a separate third hydraulic cylinder on the center of the top plate, and configures the third hydraulic cylinder to operate immediately when any one of the second hydraulic cylinders operates abnormally or becomes inoperable. , it is possible to safely end the pressurization process in progress or fundamentally prevent the phenomenon that the device is damaged due to the operation of the first hydraulic cylinder.

Each of the plurality of upper and lower guide tubes 15 and 16 is a means for guiding accurate vertical motion of the upper and lower plates 13 and 14 . The upper end of each upper guide pipe 15 is fixed to each corner of the lower surface of the upper plate 13, and each lower end extends vertically downward. The lower end of each of the lower guide tubes 16 is fixed to the corner of the upper surface of the lower plate 14, and the upper end of each is inserted through each of the upper guide tubes 15 facing each other.

The filter plate 17 is composed of a plurality of layers stacked between the upper and lower plates 13 and 14, and the filter cloth 18 is arranged in a zigzag manner in the space between the filter plates 17. The washing unit 8 is a means for washing the filter cloth 18, and a roll for winding or unwinding the filter cloth 18 is provided therein. The washing unit 8 is connected to the washing liquid tank 5.

The hydraulic unit 1 is a means for supplying hydraulic pressure to each of the first and second hydraulic cylinders 21, 22, 25, 26 and the third hydraulic cylinder 31, and may include a hydraulic pump. The slurry supply unit 2 is a means for supplying slurry to each of the filter plates 17. Further, reference numerals 3, 4, and 7 denote a high-pressure air supply unit supplying high-pressure air, a compressed water supply unit, and a wastewater storage unit, respectively. The control unit 6 is means for controlling the operation of each unit described above.

A schematic operating configuration of the present invention composed of such a configuration will be described with reference to the above description and accompanying drawings.

First, in the state of FIG. 3A , the hydraulic unit 1 operates according to the control signal of the control unit 6 to supply hydraulic pressure to the first and second hydraulic cylinders 25, 26, 21, and 22, respectively. When hydraulic pressure is supplied to the first hydraulic cylinders 25 and 26, the first pistons 27 and 28 push the lower plate 14 toward the upper plate 13 while acting vertically upward. At this time, since hydraulic pressure is supplied to the second hydraulic cylinders 21 and 22 at the same time, when the first pistons 27 and 28 act vertically upward, the second pistons 23 and 24 move the first pistons 27 and 28 ) Acts vertically downward, opposite to the direction of action of the upper plate 13, and pushes the upper plate 13 down in the direction of the lower plate 14.

Accordingly, the lower plate 14 compresses the stacked filter plates 17 and the filter cloth 18 and vertically ascends, and the upper plate 13 compresses the stacked filter plates 17 and the filter cloth 18 and vertically descends. . Each movement of the upper and lower plates 13 and 14 is aligned and vertical by the upper and lower guide tubes 15 and 16 .

As shown in FIG. 3B, when the plurality of filter plates 17 and the filter cloth 18 positioned between the upper and lower plates 13 and 14 are completely in close contact, the supply unit 2 operates according to the control signal of the control unit 6. Then, the slurry is supplied to each cavity of the filter plate 17 to be filled. When the slurry is filled in each cavity of the filter plate 17, the hydraulic unit 1 further supplies hydraulic pressure to each of the first and second hydraulic cylinders 25, 26, 21, and 22 by a control signal from the control unit 6 do.

Accordingly, each of the first and second hydraulic cylinders 25, 26, 21, and 22 acts vertically upward and downward to compress the slurry filled in each cavity of the filter plate 17, and in the process of compressing the slurry As the extracted water is naturally discharged, the moisture content of the slurry decreases. Then, high-pressure air is supplied to dry the slurry to make a solid cake, and compressed water is supplied to wash the discharge line of the filter plate 17.

When the slurry is dried and the discharge line of the filter plate 17 is cleaned, the control signal of the control unit 6 is transmitted to the hydraulic unit 1 and supplied to the first and second hydraulic cylinders 25, 26, 21, 22, respectively Withdraw the fluid slowly. Accordingly, each of the upper and lower plates 13 and 14 gradually moves vertically upward and vertically downward, and finally returns to its original state as shown in FIG. 3A. When the upper and lower plates 13 and 14 return to their original state, the control unit 6 operates the washing unit 8 to wind the filter cloth 18.

When the washing unit 8 winds the filter cloth 18, the cake solidified on the upper surface of each filter cloth 18 moves in one direction along the filter cloth 18, and then each filter plate 17 in which the direction of movement of the filter cloth 18 changes It is naturally separated from each of the filter cloths 18 at one end of the part and freely falls downward. A collection box (not shown) is provided below the pressurization unit, and the free-falling cakes are temporarily stored in the collection box and then collected.

At this time, the filter cloth 18 is wound while being cleaned by the washing liquid supplied from the washing liquid tank 5 inside the washing unit 8 . When all the solidified cakes are recovered from each filter cloth 18 and the washing of the filter cloth 18 is completed, the filter cloth 18 wound inside the washing unit 8 according to the control signal of the control unit 6 It is gradually released and returned to the original position to prepare for the next operation, and then the above-mentioned operation is repeated.

In the above, the description has been limited to the preferred embodiments of the present invention, but this is only an example, and the present invention is not limited thereto and can be modified and implemented in various ways, and furthermore, separate technical features are provided based on the disclosed technical idea. It will be obvious that it can be added and implemented.

11: support pillar 12: support plate
13: upper plate 14: lower plate
15: upper guide pipe 16: lower guide pipe
17: filter plate 18: filter cloth
21, 22: second hydraulic cylinder 23, 24: second piston
25, 26: first hydraulic cylinder 27, 28: first piston
31: 3rd hydraulic cylinder 32: 3rd piston

Claims (3)

A pressurization unit equipped with a plurality of filter plates positioned between the upper and lower plates and filter cloths disposed in a zigzag manner in a continuous space between the filter plates, a washing unit for washing the filter cloths, a hydraulic unit for providing hydraulic pressure to the pressurization unit, slurry and high-pressure air A filter press device comprising a supply unit for supplying and a control unit for controlling the operation of each unit,
The pressurization unit,
Support pillars located at a certain distance apart from each other in front, rear, left and right, each lower part fixed to the ground and each upper part extending vertically upward;
A support plate made of a plate-like structure and installed at the upper end of the support column;
Upper and lower plates positioned at a lower part of the support plate at a certain distance vertically upward and downward; It consists of a left and right pair and is located between the support pillars, each lower part is fixed to the ground, and each first piston upper part is fixed to the lower plate and aligned with the first hydraulic cylinder and the first hydraulic cylinder acting vertically upward. A second hydraulic cylinder consisting of a left and right pair installed on the upper surface of the support plate, but the lower part of each second piston is fixedly coupled to the upper plate and acts vertically downward;
Each upper part is fixed to each corner of the lower surface of the upper plate, each lower part is a plurality of upper guide tubes extending vertically downward, each lower part is fixed to the corner of the upper surface of the lower plate and each upper part is opposite A plurality of lower guide tubes inserted through each of the upper guide tubes;
Up and down compression type filter press device, characterized in that comprising a. According to claim 1,
The total capacity of the second hydraulic cylinder is in the range of 10 to 15% of the total capacity of the first hydraulic cylinder. According to any one of claims 1 or 2,
A third hydraulic cylinder is installed between the pair of left and right second hydraulic cylinders aligned with each of the first hydraulic cylinders, and the lower part of the third piston of the third hydraulic cylinder is fixedly coupled to the center of the upper plate. Up and down compression type filter press equipment.

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